Elaboration, Structure, and Intense Upconversion in Transparent KYb2F7:Ho3+ Glass-Ceramics
Elaboration, Structure, and Intense Upconversion in Transparent KYb2F7:Ho3+ Glass-Ceramics
复制标题
透明 KYb2F7:Ho3 玻璃陶瓷的精细加工、结构和强烈上转换
DOI：
10.1111/jace.12983
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发表时间：
2014
影响因子：
3.9
通讯作者：
Guo Hai
中科院分区：
文献类型：
--
作者：
Wei YunLe;Yang HeMing;Li XiaoMan;Wang LongJun;Guo Hai
首次采用熔融淬冷技术和进一步热处理成功制备了含有KYb2F7：Ho3+纳米晶的新型透明氟氧化物玻璃陶瓷。通过XRD、HRTEM、吸收光谱、上转换光谱和寿命测试等手段系统地研究了它们的结构和发光性能。在980 nm激光激发下，所有样品均呈现出Ho3+的特征发射。有吸引力的是，Ho 3+的上转换发射，特别是绿色和近红外发射，在结晶后大大增强了190倍。Ho3+掺入到具有较低声子能量的KYb2F7纳米晶体中是导致这一现象的原因。我们的研究可以丰富对氟化物纳米晶基透明氟氧化物微晶玻璃的理解。
Novel transparent oxyfluoride glass‐ceramics containing KYb2F7:Ho3+nanocrystals were successfully elaborated by melt‐quenching technique with further thermal treatment for the first time. Their structural and luminescent properties were investigated systemically by XRD, HRTEM, absorption spectra, upconversion spectra, and lifetime measurements. Under 980 nm laser excitation, all samples exhibited characteristic emissions of Ho3+. Attractively, the upconversion emissions of Ho3+, especially green and near‐infrared emissions, were enormously enhanced 190 times after crystallization. The incorporation of Ho3+into KYb2F7nanocrystals with lower phonon energy was responsible for this phenomenon. Our research may enrich the understanding of fluoride‐nanocrystals‐based transparent oxyfluoride glass‐ceramics.